package com.leinao.utils;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
 * 时间工具类
 *
 * @author leinao
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    public static String YYYY_MM_DD_HH_MM_SS_SSS = "yyyy-MM-dd HH:mm:ss.SSS";

    public static String MM = "MM";

    public static String YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前时间 YYYY_MM_DD_HH_MM_SS
     * @return
     */
    public static Date getNowTime(){
        return dateTime(YYYY_MM_DD_HH_MM_SS,getTime());
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算时间差
     *
     * @param startTime 开始时间
     * @return 时间差（天/小时/分钟）
     */
    public static String timeDistance(Date endDate, Date startTime) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - startTime.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 获取指定时间为星期几，返回数字
     * @param dt
     * @return
     */
    public static int getDayOfWeek(Date dt) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(dt);
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;
        return w;
    }

    /**
     * 获取一个时间的5分钟间隔值（5分钟四舍五入）
     * 2024-08-16 19:42:17 --> 2024-08-16 19:40
     * 2024-08-17 02:00:35 --> 2024-08-17 02:00
     * @param date
     * @return
     */
    public static String roundToNearestFiveMinutes(Date date,String format){
        LocalDateTime localDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();

        // 计算分钟数对5取模的结果
        int minutes = localDateTime.getMinute();
        int mod = minutes % 5;

        localDateTime = localDateTime.minusMinutes(mod);
        localDateTime = localDateTime.withSecond(0).withNano(0);
        Date time = Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());
        return parseDateToStr(format,time);
    }

    /**
     * 取得时间戳（精确到毫秒秒）Long 类型
     *
     * @return
     */
    public static Long getTimestampDate(Date date){
        SimpleDateFormat sdf = new SimpleDateFormat(YYYYMMDDHHMMSS);
        long timeValue = Long.parseLong(sdf.format(date));
        return timeValue;
    }

    /**
     * 获取两个给定月份之间的所有月份，并且返回一个格式为 yyyy-MM 的列表
     * @param startTime
     * @param endTime
     * @return
     */
    public static List<String> getMonthsBetween(Date startTime, Date endTime) {
        String startYearMonth = DateUtils.parseDateToStr(DateUtils.YYYY_MM,startTime);
        String endYearMonth = DateUtils.parseDateToStr(DateUtils.YYYY_MM,endTime);
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern(YYYY_MM);
        YearMonth start = YearMonth.parse(startYearMonth, formatter);
        YearMonth end = YearMonth.parse(endYearMonth, formatter);

        List<String> months = new ArrayList<>();
        YearMonth current = start;

        while (!current.isAfter(end)) {
            months.add(current.format(formatter));
            current = current.plusMonths(1);
        }

        return months;
    }

    public static void main(String[] args) {

    }
}
